Grinding-machine.



, PATEN-TED MAR. 20; 1906'.' A. 0. GALKINS. v GRINDING MACHINE.

APILIOAT ION FILED SEPT. 26. 1904.

3 SHEETS-SHEET 1.

- WITNESSES: I

PATENTED MAR. 20, 1906.

A. G. CALKINS. GRINDING MACHINE. APPLIO'ATION nun SEPT. 26. 1904.

8 SHEETS-SHEET 2.

A TTORNEY WITNESSES:

PATENTED MAR. '20, 1936.

.A. C. GALKINS. GRINDING MACHINE;

rrmmzuon rum) SEPT. 28. 1904.

3 SHEETS-SHEET 3.

ATTOBNE Y I UNITED STATES PATENT orrion ALBERT. OALKINS, OF LOS ANGELES,CALIFORNIA. GR I NDING-MA CH INE.

- .No. 815,333. Specification of Letters Patent. Patented March 20,1906.

.ing to be full, clear, and exact description of 'grmding-surfaces forgrinding-machines used WlllftVOld concentrically grooving the disks.other material in quick succession containtions of the same-ingredientsthat obviate the 'pulverizing ores to the required degree-. of fineness,reference being made to the acc'om ing drawings, in which support. Fig.is a sectional view of the Application filed SeptemberZfi, 19 4.$eria1No. 226.030.

To aZZ whom it may concern:

Be it known'that I, ALBERT (J. GALKINS, a citizen oftheUnited States,residing at Los Angeles, in the county of Los Angeles, State ofCalifornia, have invented and discovered a new and useful ImprovementinGrinding- Machines; and I do hereby declare the followview of themachine, taken upon the line d (Z.

of Fig. 1. I Fig. is a cross-sectional view of the machine, therocker-arm elevated and the disks in position to be cleaned; and .Fig.11 is a sectional view of parts in detail.

Similar reference numerals and letters refer to like parts throughoutthe several views. i

The reference-lettersA B denote the bedplate or support for the machine.The letter A refers to the longitudinal portion of the said support,having horizontal and vertical parts, and the letter B indicatesthe endortion of said support. The rectangular, ot- 7o tomless, and 0 en-topbox, C, having side pieces D D" an end pieces E E, rests upon theportion B of the bed-plate or' support A B, which is preferablyconstructed of castiron and made integralwit'h the said'side pieces D Dand end pieces E E of the box. The side pieceD is cut out or circularlyrecessed at F, as shown upon Figs. land 10 of the drawings, the saidrecess F to allow unim eded oscillation for a portion of the roc er-armcarrylng the driven shaft when 1 the machine is in operative position asillus- I trated upon Fig. 1 of the drawings. The reference-numerals 2 2denote lugs projecting upwardly, one from either end of the saidvertical part of the'longitudinal portion A ofthe support or bed-plateAB of themachine, havlng elongated perforated heads 3 3 ,pon the ends oflugs, in which perforated heads the bar or rod 4 vibrates or rocks. Thesaid bar or rod extends beyond the ends of the portion A of the supportor bed-plate of the machine. On the rod 4 the rockerarm 20 (hereinafterspecifically mentioned) 'is secured and is adapted to be swung up- 5ward and rocked, respectively, as illustrated upon Figs. 10 and 1 of thedrawin s. The numeral 50 represents the gear-'shie d. The end of thesaid rod 4. adjacent to the opentop box 0 is screw-threaded at '5 toreceive TOO the hand-nut 6 and the angular wrench-nut 7 in order tolongitudinally. adjust the said rocker-arm supporting the drivenrevolving shaft21, carrying on one end thereof the movthe invention,such as will enable others skilled in the art to which it 'appertains tomakeand use the same. v

This invention relates-to improvements in grinding-machines; and theobjects of my improvement are, first, to construct disks or forpulverizing-ores or other material that or grinding-surfaces ,second, tomanufacture machines for grinding samples of ores 01:

mg varied ingredients and different propormixing of the ingredients ofone sample with the ingredients of another sample, and, third, toprovide machines with grinding disks that can be quickly separated andcleaned and again conveniently brought together for panying drawings, tothe figures, reference numerals, and letters marked thereon.

The invention consists, essentially, in the construction, combination,and arrangement of the several parts, as will be hereinafter fullydescribed, and specifically pointed out in the claims.

I attain the objects above referred. to by the construction,combination, and arrangement of parts illustrated the accompany- Figure1 is a plan view of the machine, a part of the gear-shield broken away.Fig. 2 is a plan view of the rotary grinding-disk removed from thedriven shaft. Fig. 3 is a sectional view of the rotary disk, taken onthe line a a of Fig. 2. Fig. 4 is a plan View of the stationary diskremoved from the frame or stationary disk, taken on the line b b of Fig.4. able revolving disk 22, adapted to be brought 1o 5 Fig. 6 is a viewin elevation of the machine, in contact with and grind against the faceof the parts thereof in operative positions. the stationary disk 23,secured, within the "F1g. '7 is a plan view of the cam upon the box 0,to the side piece D thereof, by means driven shaft and. a portion of thegear for of screw-bolts 29 29,, which enter screwoperating said cam.Fig. 8 is a sectional view threaded holes 39 39 in the outer face of theno of the cam and. rivi ng-gear, taken upon the disk 23. Upon theopposite end of thebar or 'line a c of Fig. 7 Fig. 9 1s a.cross-sectional rod 4. farthest from the open-top box 0 the drivinggear8 and the pulley 9 are keyed to a flange-sleeve 12, which revolves uponthe said rod or bar 4, the pulley 9 having a handle 10 secured thereon.The pulley 9, if required, may be driven by a belt passing over thedriving-pulley of a motor. (Not necessary to be shown.) The driving-gear8 meshes with the gear 11 upon the end of the driven shaft 21, journaledin the free ends 24 24 of the rocker-arm 20, which is secured to thesaid rod or bar 4 by means of pins 25 25, the said rod or bar turningwithin the perforated heads 3 3 as the said free ends 24 24 of therocker-arm 20 are elevated or depressed by a earn 36. One end 24 of therocker-arm is rovided with a handle 12, by means of which the saidrocker-arm is rocked or turned upward, as shown upon Fig. 10 of thedrawings, in order to clean the grinding-disks 22 20 and 23. Thereference-numeral 13 designates the hopper, which is preferablyconstructed of cast-iron and made integrally with the said side piece Dof the box C. The openin 14(shown in dotted lines upon Fig. 6 2 5 of therawings) communicates with the perforation 15 in the stationary disk 23,through which opening 14 and perforation 15 the material to be ground orpulverized passes through the hopper to the grinding-surfaces 0 of thedisks 22 and 23. The material after being pulverized or ground fallsinto a suitable vessel or pan (not necessary to be shown) placed underdisks 22 and 23 within the box 0, and it can be quickly and conveniently3 5' removed or replaced under the said disks when desired. The movablerevolving grinding-disk 22 is secured upon the end of the drivenrevolving shaft 21 by means of headed screw-threaded bolts 17 17, asillustrated upon Figs. 1 and 6 of the drawings, which pass through theplate 16, fastened upon the said shaft 1n any suitable manner, the saidbolts being fastened into the screw-threaded holes 18 18 in the outerface of the grinding-disk 22, 4 5 as shown upon Fig. 3 of the drawings.

Keyed or otherwise secured upon the driven revolving shaft 21 is thegear 30, adapted to mesh with the gear 32, which revolves upon the stud34, projected from and secured to the rocker-arm 20. The gears 32 and 33are secured together.

The cam 36 and the gear 37, the latter keyed upon the hub 38 of theformer, both cam and gear mounted loosely, revolve struction andequivalents thereof that come 5 5 upon the drivenshaft 21, asillustrated upon within the scope of my improvement as 120 Figs. 1, 7,and 8 of the drawings. The gear herein shown and described, andillustrated 37, splined upon the hub 38 of the cam, upon the drawingsappended hereto. meshes with the gear 33 upon the projecting Havingdescribed my invention, what I do stud 34, and the cam contacts with andreclaim, and desire to secure by Letters Patent,

berof revolutions of the cam 36 compared with the number of revolutionsof the shaft 21, actuated by the driving-gear 8, of far greaterdimensions than the gear 37. Besides, the said large driving-gear 8meshes with the gear 1 1 ,ofless dimension than the cam-gear 37 Thus itwill readily appear that the speed of the cam and its gear 37, revolvingindependently of but upon the shaft 21, is greatly diminished in speedcompared with the speed of the said shaft, on which the said cam and itsgear 37 are loosely mounted. The different rates of speed which theshaft 21 and the cam 36 travel, the latter against the periphery of theroller 42, cause the movable re- 0 volving disk upon the shaft 21 todescribe an ever-changing orbit eccentric to the circumference orimaginary orbit described by the stationary disk. The orbit of theformer, the movable revolving grinding-disk, is an ever- 3 5 changingorbit relative to or compared. with the one fixed orbit described by thecircumference of the stationary disk. The orbit described by the movablerevolving disk compared with that of the stationary disk is one 9 thatchanges or departs at every point thereof relative to the orbit of thecircumference of the stationary disk. Theformer does not coincide withthe latterthat is, a section of the orbit or any portion thereof is notcoincident with any portion of the are described by the circumference ofthe stationary disk.

It will readily appear from the foregoing description, when read inconnection with 1 0 the drawings hereto appended and made a part of thespecification and claims, what is the operation of my machine, andfurther description of the manner of operating the machine is deemedunnecessary. IO 5 It is obvious that many variations and changes in thedetails of construction, combination, and arrangements of my inventionwould readily suggest themselves to persons skilled in the art and stillbe within the spirit I 10 and scope of my improvement.

I do not desire to confine this invention to the specific constructionand arrangements of parts herein shown and described, and the right isreserved to make all changes in and 1 5 modifications of the same thatcome within the spirit of this invention; but I do desire to secure asmy invention all features of con- 6o volves upon the roller 42, whichalso revolves 1s- 1 5 upon the projecting pin 41, secured to the 1. Agrinding-machine comprising a starocker-arm 20. The cam 36 and the gear37 tionary disk and means for supporting the being loosely mounted uponthe shaft 21, the same, a longitudinally-adjustable oscillating saidgear 37 meshing with the smaller gear rocker-arm and a support therefor,a driven 65 33 on the stud 34 greatly decreases the numshaft having adisk secured upon one end 3 shaft upon the opposite end, a cam o eratedupon said driven shaft and a roller or contacting with said cam and forvarying the revolution of said. movable disk at everypoint relative tothe stationary disk.

2. A machine provided with a shaft and driving-gear thereon, a rockerframe or arm on said shaft, a driving-shaft in said rocker,- framecarrying a gear meshing with the firstmentioned gear, a disk carried bythe driven shaft, a stationary disk, said parts-being so constructedthat the rotary disk can be swung into inoperative position Withoutdisengaging the parts.

3. A machine provided with a frame having a casing and bearings, a shaftjournaled in said bearings, driving devices carried upon 7 said shaft, adriven shaft mounted in said frame and having devices in engagement withthe first-mentioned devices, a stationary disk carried by said drivenshaft, a counter-shaft, gears connecting the counter and driven shafts,a sleeve, the driven shaft geared to the counter-shaft, an eccentric onsaid sleeve and a roller in engagement with said eccentric.

In testimony whereof I have signed my name to this specification in thepresence of 0 two subscribing witnesses.

ALBERT C. OALKINS.

Witnesses:

ANNA MORGAN, G. H. WOODCOCK.

mounted in said casing, a rotary disk

